---------------------------------------------------------- Kitfox-List Digest Archive --- Total Messages Posted Sun 08/18/13: 8 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 09:25 AM - Fuel flow (clemwehner) 2. 09:36 AM - fuselage angleWhat (clemwehner) 3. 10:07 AM - Re: Fuel flow (Guy Buchanan) 4. 10:51 AM - Re: fuselage angleWhat (Richard Weiss) 5. 11:10 AM - Boot cowl attachment (Michael Kraus) 6. 03:02 PM - Re: Boot cowl attachment (Brian Leach) 7. 05:44 PM - Re: Boot cowl attachment (Lowell Fitt) 8. 05:45 PM - Re: fuselage angleWhat (Lowell Fitt) ________________________________ Message 1 _____________________________________ Time: 09:25:54 AM PST US Subject: Kitfox-List: Fuel flow From: "clemwehner" Our KF-IV has the plastic header tank behind the seat. Since the header tank is lower than the carbs, how can the engine run from the header tank in the event fuel flow stops from the main tanks for some reason? Some guys have said that there is about 10 minutes of fuel in the header tank. How is that possible with no gravity flow in level flight? Does the engine fuel pump suck fuel from the header when it's running? thanks, Clem Oklahoma Read this topic online here: http://forums.matronics.com/viewtopic.php?p=406963#406963 ________________________________ Message 2 _____________________________________ Time: 09:36:12 AM PST US Subject: Kitfox-List: fuselage angleWhat From: "clemwehner" What angle should the fuselage be raised to when doing a gravity flow fuel flow test on a KF-IV ? thanks for the help. Clem Oklahoma Read this topic online here: http://forums.matronics.com/viewtopic.php?p=406964#406964 ________________________________ Message 3 _____________________________________ Time: 10:07:10 AM PST US From: Guy Buchanan Subject: Re: Kitfox-List: Fuel flow On 8/18/2013 9:25 AM, clemwehner wrote: > Our KF-IV has the plastic header tank behind the seat. Since the header tank is lower than the carbs, how can the engine run from the header tank in the event fuel flow stops from the main tanks for some reason? Some guys have said that there is about 10 minutes of fuel in the header tank. How is that possible with no gravity flow in level flight? > > Does the engine fuel pump suck fuel from the header when it's running? > In a "normal" IV installation the mechanical pump will draw fuel from the header at any sustainable pitch angle. Interestingly, I could find no specification in the install manual for the minimum fuel level (below the pump) that the pump would draw. Note that the mechanical pump works with many aircraft that have low wings and therefore much less head pressure than even your header tank. Guy Buchanan Ramona, CA Kitfox IV-1200 / 912-S / Warp 3cs / 500 hrs. and grounded Now a glider pilot, too. ________________________________ Message 4 _____________________________________ Time: 10:51:42 AM PST US Subject: Re: Kitfox-List: fuselage angleWhat From: Richard Weiss Clem, This is a very interesting subject. The NTSB has raised questions about this since engine/fuel issues account for a large percentage of E-AB accidents. I suggest viewing an EAA video (it was a webinar) on this same subject. We created this in direct response to the NTSB and it's been well received. See if this helps answer your question. Here's the link to the video: http://www.eaavideo.org/video.aspx?v=2195707082001 Rick Weiss Series V (Skystar s/n 1) Speedster:-) Rotax 912S, Dynon Sky View/ADS-B Spruce Creek Fly In, FL On Aug 18, 2013, at 12:36 PM, clemwehner wrote: > > What angle should the fuselage be raised to when doing a gravity flow fuel flow test on a KF-IV ? > > thanks for the help. > > Clem > Oklahoma > > > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=406964#406964 > > > > > > > > > > ________________________________ Message 5 _____________________________________ Time: 11:10:29 AM PST US Subject: Kitfox-List: Boot cowl attachment From: Michael Kraus I could not find in the directions how to attach the boot cowl. I don't rea lly see a need to ever remove it other than ease of access to the front side of the IP. Screws wouldn't look as nice as hysol and riveting in place. I'm just wonde ring what others have done. Thanks -Mike Kraus Sent from my iPhone
________________________________ Message 6 _____________________________________ Time: 03:02:58 PM PST US From: "Brian Leach" Subject: Re: Kitfox-List: Boot cowl attachment Hi Michael. Don't kid yourself that you wont want to remove it. I have a booted cowl on my Avid that is held around the bottom of the windscreen with machine screws and captive nuts about 3 1/2 inches apart, and camlocks everywhere else. I have had it off numerous times, to install and service a transponder, to change a dud radio, to change EGT's that stopped working, and to take the engine out to replace the water pump. (Rotax 912) Don't rivet it or you will certainly regret it. Brian ----- Original Message ----- From: "Michael Kraus" Sent: Monday, August 19, 2013 6:10 AM Subject: Kitfox-List: Boot cowl attachment I could not find in the directions how to attach the boot cowl. I don't really see a need to ever remove it other than ease of access to the front side of the IP. Screws wouldn't look as nice as hysol and riveting in place. I'm just wondering what others have done. -------------------------------------------------------------------------------- > > Thanks > -Mike Kraus > > > ________________________________ Message 7 _____________________________________ Time: 05:44:35 PM PST US From: "Lowell Fitt" Subject: Re: Kitfox-List: Boot cowl attachment I think I would have to agree with Brian. I have helped with or built 3 Kitfoxes and one Lancair. Being able to access the area behind the panel without laying on your back with your head against the rudder pedals is like heaven compared with the Lancair. On that, I helped build the panel and get it physically in the airplane, but when it came to wiring everything together, I backed away - my old body would probably still be stuck in there somewhere. But, the proof would be to attach the cowl, imagine every corner of the panel, especially with radios, displays and other items extending forward with switches, mounting hardware, and pneumatic tubing and see what you can reach. One other option might be to design a modular panel with sub panels that are removable which can be assembled on your lap and then stuffed and screwed in place. Lowell -------------------------------------------------- From: "Brian Leach" Sent: Sunday, August 18, 2013 3:00 PM Subject: Re: Kitfox-List: Boot cowl attachment > > Hi Michael. Don't kid yourself that you wont want to remove it. I have a > booted cowl on my Avid that is held around the bottom of the windscreen > with machine screws and captive nuts about 3 1/2 inches apart, and > camlocks everywhere else. I have had it off numerous times, to install > and service a transponder, to change a dud radio, to change EGT's that > stopped working, and to take the engine out to replace the water pump. > (Rotax 912) Don't rivet it or you will certainly regret it. > > Brian > > > ----- Original Message ----- > From: "Michael Kraus" > To: > Sent: Monday, August 19, 2013 6:10 AM > Subject: Kitfox-List: Boot cowl attachment > > > I could not find in the directions how to attach the boot cowl. I don't > really see a need to ever remove it other than ease of access to the front > side of the IP. > > Screws wouldn't look as nice as hysol and riveting in place. I'm just > wondering what others have done. > > > -------------------------------------------------------------------------------- > > >> >> Thanks >> -Mike Kraus >> >> >> > > > ________________________________ Message 8 _____________________________________ Time: 05:45:37 PM PST US From: "Lowell Fitt" Subject: Re: Kitfox-List: fuselage angleWhat Rick, Good advice. I was interested that in the survey, only about a third of builders did any fuel flow testing before first flight. Lowell -------------------------------------------------- From: "Richard Weiss" Sent: Sunday, August 18, 2013 10:51 AM Subject: Re: Kitfox-List: fuselage angleWhat > > Clem, > > This is a very interesting subject. The NTSB has raised questions about > this since engine/fuel issues account for a large percentage of E-AB > accidents. I suggest viewing an EAA video (it was a webinar) on this same > subject. We created this in direct response to the NTSB and it's been > well received. See if this helps answer your question. > > Here's the link to the video: > http://www.eaavideo.org/video.aspx?v=2195707082001 > > Rick Weiss > Series V (Skystar s/n 1) Speedster:-) > Rotax 912S, Dynon Sky View/ADS-B > Spruce Creek Fly In, FL > > > On Aug 18, 2013, at 12:36 PM, clemwehner wrote: > >> >> >> What angle should the fuselage be raised to when doing a gravity flow >> fuel flow test on a KF-IV ? >> >> thanks for the help. >> >> Clem >> Oklahoma >> >> >> >> >> Read this topic online here: >> >> http://forums.matronics.com/viewtopic.php?p=406964#406964 >> >> >> >> >> >> >> >> >> >> > > > ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message kitfox-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Kitfox-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/kitfox-list Browse Digests http://www.matronics.com/digest/kitfox-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.